Door-hinge.



1. R. PILSON.

DOOR HINGE.

. APPLICATION FILED 050.4.1915.

Patented; Jan. 15, 191.8.

R O T N E V N James R i iZZSOW ATTORNEY hence.

JAMES-R; PILSON', OF VANGUARD; SASKATCHEWAN, CANADA.

DOOR-HINGE.

Specification of Letters Patent.

Patented Jan. 15,1918.

7 Application filedflece'ni'b'er 4, 1915. Serial No. 65,157.

katchewan and Dominion of Canada, have invented certain-new and useful Improvements in Door-Hinges, of which the t'ollowing is" aspecification.

This invention relates to a door hinge, and one object thereof is to providea' hinge embodying means forcush'ionin'g closing movement of the door to prevent slamming of the same.

A' further object is' to provide, in' cornbination with such cushioning means, spring means insuring the closing of a door under all conditions.

With the above and other objects in view, I will now proceed to describe the specific embodiment of my invention as illustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of the hinge opened out.

Fig. 2 is a top plan view of the hinge as shown in Fig. 1.

Fig. 8 is a sectional view on the line 8-3 of Fig. 1, but showing the hinge as applied to the door and in the closed position.

Fig. 1 is a detail sectional view through the door plate guide plungers, and

Fig. 5 is a central sectional view through the jamb plate cushioning cylinder.

In detail:

The invention, as herein shown, includes the door plate A and jamb plate B pivoted together at C in the usual manner. The door plate A is provided on one edge with :1 lug 1, which cooperates with a hasp 2, provided with a lip 3, said hasp being pivoted to the door plate B at 1. When the hinge is closed, it will therefore be evident that the hasp 2 may be moved to that position shown in Fig. 3 so that the lip 3 will engage the lug 1 and lock the door in closed position. The jamb plate B is provided with a threaded aperture 5, into which is screwed one end of an arcuate cylinder 6, said cylinder being closed at its outer end by a cap 7 provided with a bleed port 8. The cylinder 6 is divided into two chambers, namely, a guide chamber 9 and a cushioning chamber 10, the former being of smaller diameter than the latter, and being adapted to receive a plunger 11 carried by a shank 12 screwed into the door plate A as shown at 13, said plunger 11 being secured to the shank 12 by means of the nut 14. The plunger end of the shank 12 is provided with a hook 15, the purpose of which will be hereinafter set forth. Vithin the cushioning chamber 10 of the cylinder 6, is located a piston 16 pro vided with a'port 17 covered by a flap valve 18. On each side the piston 16 carries a hook 19, and in the cylinder head 7 is a A spring 21 is attached; to the hook 20 andon'e of the hooks 19, andasprin'g 22 is attached to the other hook 19 similar hook 20'.

and to hook 15 on the guide plunger 11.

The operation of the hinge is as follows: Suppose the; door-is'being opened, then the piston 16 will slide freely in the cushioning chamber 10 by reason of the fact that the flap valie 18 will be open, and also air may enter the port 8 as well as the port 17, the only resistance to opening of the door being that due to the stretching of the springs 21 and However, when the door is being closed, the springs 21 and being properly proportionated for the weight of the door will act to draw the door and its door plate A toward the jamb plate B at which time the guide plunger 11 will enter the cylinder 9 and the piston 16 will move toward the head end of the cushioningchamber 10; thus the tendency will be for the fiap valve 18 to remain closed forming a cushioning chamber on the door side of the piston 16 as well as a cushioning chainber on the cylinder head side of the plunger, but the door will gradually close by reason of the fact that air escapes through the bleed port 8, and before a final closure is etfected displacement of air from the door side of the piston 16 will take place through the valve 18, due to the entrance ot the guide plunger 11 into the cylinder.

lVhile I have herein described a specific embodiment of. the invention, it is nevcrthcless to be understood that I do not limit myself to the specific construction disclosed except in so far as the invention is defined in the appended claims.

I claim:

1. A hinge comprising a pair of relatively movable plates, a cylinder secured to one of said plates and being open at one end. a piston in said cylinder, a plunger secured at one end to the other of said plates and projecting at its outer end into said cylinder, and a yieldable connection bet ween said plunger and piston and between said piston and the end of said cylinder.

ill)

2. A hinge comprising a pair of relatively movable plates, a cylinder secured to one of said plates and being open at one end, a piston in said cylinder, a plunger secured at one end to the other of said plates and projecting at its outer end into said cylinder, a yieldable connection between saidplunger and piston and between saidpiston and the closed end of said cylinder, the said closed end having a bleed port, and a one-Way valve in the said piston.

3. A hinge comprisin a pair of relatively movable plates, a cylinder carried by one of said plates and being open at one end, a piston in said cylinder, a contractile spring connecting said piston and the end Wall of said cylinder, aplunger secured at one end to the other of said hinge plates and projecting at its outer end into said cylinder, a contractile spring connecting said plunger and said piston, the said closed end of said Copies of this patent may be obtained for five cents each, by addressing the "commissioner of Patents,

Washington, D. 0. r

cylinder having a bleed port, and a onewvay valve in sald plston.

a. A h1nge compr sing a pair of relatively movable plates, an arcuate cylinder secured to one of said plates and being closed at one end, a piston in said cylinder, an arcuate plunger secured at its inner end to the other inge plate and extending into said cylin- V JAMEs'R. Pniso vf \Vitnesses: 7

JAMES HENRY BEST, THOS. WARD. 

